Re: cDOT Create new snapmirror relation using snapmirror-create API

When specifying a source endpoint, you must use either the source location, or the source cluster, source Vserver, and source volume.

It's not worded very clearly, but you should either specify source-location (in the form of [cluster:]//vserver/volume), or specify source-cluster, source-vserver, and source-volume. Don't specify both groups.